Improvement in carpet-linings



UNITED STATES f'rHoMAsri. n nrrAM, on nosron, MAsSACHUSE IIS. a

IMPROVEMENT IN cA eET-u'nmes.

PATENT QFFICE.

Specification forming part of Letters Patent No. 173,779, dated February 22, 1876 application filed June 3, 1875.

To all whom it may concern Be it known that I, THOMAS H. DUNHAM,

ofthe city of Boston, in the county of" Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Oarpet-Linings; andI do hereby declare that the following is a full, clear, and exact descript'ion thereof, which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the'accompanying drawing, and to the letters of reference marked thereon, which form a part of this specification.

My invention consists in fabrics for carpetlinings saturated with tar-compound, composed of tallow, tar, ocher, sulphur, rosin, alum, madder, turmeric or other equivalent coloring matter, clay, chalk, whiting, baryta, sulphate of ammonium or other soluble salt of an alkali oralkaline earth, also camphor or other aromatic equivalent, by which the carpet-lining is rendered fire and water-proof,having bright and may be taken up and used in case of need as a protection from injurylto furniture or carpets, in case of fire or accidents. It is a useful and. durable carpet or carpet-lining, which may be printed in colors, and will give a sure protection from vermin, allowing the dirtto be kept. from its surface, so as to prevent the carpet from wearing on the surface.-

y I will now state more fully the manner of carrying out and manufacturing according to my invention.

I immerse the fabrics, such as .burlaps or coarse cloth, in a tar-compound heated 212 Fahrenheit, and composed of three pounds pot ash, five pounds rosin, ten to twenty pounds alum, ten to twenty pounds of tallow or oils to every barrel of tar. I then add five to ten pounds of crude sulphur, to give a light color,

or ocher, turmeric, madder, or equivalent of these, and camphor or other aromatic equivalent, whiting,clay, lime, chalk, baryta, sulphate of ammonia, or any other soluble salt of an alkali or of an 1 alkaline earth, mineral, or other fire-proof equivalent;

I saturate the fabric thoroughly in this mixture, pressing out the compound not needed, and run it over heated cylinders or steam-drying surfaces. One side of the fabric may have a nap, or flocks may be sifted on it.

Having thus described my invention, what I claim and desire to secure by. Letters Patcut, ist A carpet or carpet-lining of coarse woven fabric, impregnated with a tar-compound consisting of the ingredients as stated, and having bright colors, and being free from surface adhesiveness.

In testimony that I claim the foregoing as my own invention I hereby affix my signature in presence of two witnesses.

THOMAS H. DUNHAM. Witnesses:

J H. PEIRGE,

CHAS. J. HEDRIGK. 

